MASON DISC Museum of Science Boston, Massachusetts Stick a straight pin through the center of the circle. Spin the card on the pin and you will see colors made from black-and-white. White contains all the colors of the scientists believe the light-sensitive retina train bo the aye responds other more quickly to some of these colors than to colors. white image moves around the retina, some of the component colors are perceived at Then given given spot art ofe, retina sooner than others. part of the image moves over that spot, before the rest of the colors can come through. Since different parts of the disc move at different speeds (faster as YOU get farther from the center) different colors are seen. natural color company, inc., boston, mass. 02130 .. Plastichrome P81960 POST CARD
Thanks for looking!
😀
632
~-A6124-1012-21~-
